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863
help-10
e5b4722900974a3ab4e759b78dfadee3
761,155,030,513,352,700
Bungo
02/23/2022 21:00:33
had to add my own brackets
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help-10
e5b4722900974a3ab4e759b78dfadee3
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Bungo
02/23/2022 21:00:54
Pretty scary what 1.2% growth can do when the numbers are that huge
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help-10
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521,326,998,195,273,700
shreksdad
02/23/2022 21:01:08
Sheesh
1
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help-10
e5b4722900974a3ab4e759b78dfadee3
521,326,998,195,273,700
shreksdad
02/23/2022 21:01:32
Do you have more of these types of problems?
1
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help-10
e5b4722900974a3ab4e759b78dfadee3
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Bungo
02/23/2022 21:02:31
Me? I could probably make one up but do you have a textbook? There should be more in there..
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help-10
e5b4722900974a3ab4e759b78dfadee3
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shreksdad
02/23/2022 21:02:46
No I don't, sadly
1
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help-10
e5b4722900974a3ab4e759b78dfadee3
521,326,998,195,273,700
shreksdad
02/23/2022 21:03:15
https://cdn.discordapp.c…9626/unknown.png
unknown.png
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help-10
e5b4722900974a3ab4e759b78dfadee3
521,326,998,195,273,700
shreksdad
02/23/2022 21:03:18
This seems a bit too easy, but maybe I missed something
1
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help-10
e5b4722900974a3ab4e759b78dfadee3
761,155,030,513,352,700
Bungo
02/23/2022 21:04:01
Try look for exponential growth (or exponential decay) practice problems
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help-10
e5b4722900974a3ab4e759b78dfadee3
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shreksdad
02/23/2022 21:04:11
Alright
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help-10
e5b4722900974a3ab4e759b78dfadee3
521,326,998,195,273,700
shreksdad
02/23/2022 21:04:14
.close
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Bungo
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864
help-10
97da5ce289c64fc2917e2ca508133138
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shreksdad
02/23/2022 21:04:17
Thanks btw
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help-10
97da5ce289c64fc2917e2ca508133138
308,393,615,946,809,340
lib ral
02/23/2022 21:05:55
https://cdn.discordapp.c…9304/unknown.png
unknown.png
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help-10
1f78f6c85c784078b8bcca0c7974381d
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xihiro
02/23/2022 21:43:43
I proved that if B's 1st and 3rd columns are equal, then AB's columns also are (typical matrix product)
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 21:44:02
now I am asked if the same is valid for rows
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help-10
1f78f6c85c784078b8bcca0c7974381d
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xihiro
02/23/2022 21:44:20
I was hoping to use the transpose to find out
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
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xihiro
02/23/2022 21:44:50
do you know if it is possible?
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help-10
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Cogwheels of the mind
02/23/2022 22:11:07
yes from the fact that j th column of AB is Σb_ij (i th column of A) also i th row of AB=Σa_ij (j th row of B)
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Bungo
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help-10
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Cogwheels of the mind
02/23/2022 22:11:31
(Sum in terms of i / j respectively )
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:18:39
@Cogwheels of the mind But I mean just doing some algebra, like AB = C with B having the properties above, then C^T will have equal 1st and 3rd rows
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:18:52
now C^T = (AB)^T
1
0
null
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null
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865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:18:59
= B^T A^T
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help-10
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xihiro
02/23/2022 22:19:11
can we do something from here?
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:29:57
well, there was another question for when A has rows 1 and 3 equal. I used the transpose in that question instead
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:31:08
Okay. i and i’ row of A are equal, then i and i’ column of A^T are equal then i, i’ column of B^TA^T are equal, which are i ,i’ column of (AB)^T which are i, i’ row of AB
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help-10
1f78f6c85c784078b8bcca0c7974381d
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xihiro
02/23/2022 22:31:15
for this question I just wrote the line of AB as this [ AB ]_i = SUM[i=1 to 3] a_i1 [ b_i ]
1
0
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:31:37
and then considered how I could find a counter example
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:32:12
Don’t understand your symbols
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:32:26
You mean i th row of A?
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:32:33
[A]_i
0
1
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null
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null
null
865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:32:42
[ b_i ] means line i of B
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:32:54
What do you mean line , row?
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Cogwheels of the mind
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Cogwheels of the mind
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865
help-10
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714,186,370,934,898,700
xihiro
02/23/2022 22:32:58
yeah
1
0
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:33:13
Then it’s wrong
0
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:33:32
ah yeah
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:33:35
It should be Σa_ij [b_j]
0
1
null
null
null
null
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865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:33:36
I wrote it wrongly
1
0
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:33:41
but I got it right
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
826,318,983,413,366,800
Cogwheels of the mind
02/23/2022 22:33:41
j from 1 to n
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1
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null
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null
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865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:33:47
yeah
1
0
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:34:13
in any case, I don't see how for this question I could use the result from the first
1
0
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865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:34:29
but it's done
1
0
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865
help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:34:34
so let's not waste more time
1
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:34:46
thanks for the help!
1
0
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help-10
1f78f6c85c784078b8bcca0c7974381d
714,186,370,934,898,700
xihiro
02/23/2022 22:40:02
.close
1
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866
help-10
e0d3c0527fda48e1be9c1831d4bc888b
368,554,884,657,840,100
swichherddhhhh
02/23/2022 22:47:03
can anyone explain how to use the diophantine equation? im trying to use it but im so confused
1
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867
help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:26:53
Was in here earlier but couldn’t find the chat
https://cdn.discordapp.c…976/IMG_1541.jpg
IMG_1541.jpg
1
0
null
null
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null
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:27:07
The answer is B
1
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
521,464,336,284,254,200
Gamer Dio
02/23/2022 23:29:37
Am I mistaken in saying the force of gravity along the slope is F_g *sin(34), not cos(34)?
0
1
null
null
null
null
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867
help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:36:25
That’s what the other guy said but I didn’t understand
1
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:37:53
Your saying F parallel should be sine?
1
0
null
null
null
null
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867
help-10
d8e91756e15a43fa9e0d80a1f8b4a333
521,464,336,284,254,200
Gamer Dio
02/23/2022 23:38:38
Yes. Look at the right triangle you drew. We want the side parallel to the slope. The top angle can be found to be 34, same as the incline. Then you just use trig
0
1
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null
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:40:00
Ohh right because theta would be on the box
1
0
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867
help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:41:49
?
1
0
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
521,464,336,284,254,200
Gamer Dio
02/23/2022 23:42:01
Yes
0
1
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:42:50
Okay thanks let me re do it quick
1
0
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:45:17
Thx I got it
1
0
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help-10
d8e91756e15a43fa9e0d80a1f8b4a333
758,166,811,199,012,900
1000
02/23/2022 23:45:22
.close
1
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:56:39
Can someone correct me if this is wrong? This is a physics formula by the way
1
0
null
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:56:42
https://cdn.discordapp.c…010/IMG_3106.png
IMG_3106.png
1
0
null
null
null
null
null
868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 15:57:13
and the acceleration $g$ ?
0
1
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
510,789,298,321,096,700
TeXit
11/07/2021 15:57:15
**BillyElKid**
https://cdn.discordapp.c…502881878148.png
738072502881878148.png
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1
null
null
null
null
null
868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:57:23
Ohhh umm
1
0
null
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:57:38
Let me try again
1
0
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help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 15:57:39
it seems to dissapear
0
1
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 15:57:47
between 2) and 3) line
0
1
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:59:06
https://cdn.discordapp.c…244/IMG_3107.png
IMG_3107.png
1
0
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null
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 15:59:46
The 2y comes from the multiples two
1
0
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:00:29
the minus sign between the 5th and 6th line?
0
1
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:00:46
of (2y)
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1
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:01:32
The minus is gone because the -g and -2y both has same negative sign so it’s positive ?
1
0
null
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null
null
null
868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:02:57
and where is $-g$? i only see -2y and g, not -g in the 5th and 6th line
0
1
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null
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
510,789,298,321,096,700
TeXit
11/07/2021 16:02:59
**BillyElKid**
https://cdn.discordapp.c…502881878148.png
738072502881878148.png
0
1
null
null
null
null
null
868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:04:01
I put the negative on the top with 2y
1
0
null
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null
null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:04:15
Should I only put it to g and not whole fraction ?
1
0
null
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null
null
null
868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:06:12
that isn't really important because you have this.
https://cdn.discordapp.c…5925/unknown.png
unknown.png
0
1
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null
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868
help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:06:20
what i'm saying is this
0
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:07:17
https://cdn.discordapp.c…2892/unknown.png
unknown.png
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:08:32
the negative sign moving to the top or bottom is the same thing is that what it means ?
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:08:41
also, when you apply square root you have to enclose all of the remaining expression
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:08:46
yes
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help-10
f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:09:13
which means i have to square root on everything including the g ?
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f0b0029cde9b49dea1985582cb6b7abb
456,226,577,798,135,800
Deleted User
11/07/2021 16:09:24
hi does this server help me with my math hw?
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:09:27
yes
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help-10
f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:10:05
use an unoccupied channel
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:10:30
what does this means?
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:10:44
for the red color
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:11:18
$\frac{(2y+2y_{0})}{g}$
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f0b0029cde9b49dea1985582cb6b7abb
510,789,298,321,096,700
TeXit
11/07/2021 16:12:20
**BillyElKid**
https://cdn.discordapp.c…502881878148.png
738072502881878148.png
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:12:23
why is it not equal ? isnt it already not equal in the first place?
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:14:10
because you write that in the 5th and 6th line
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BillyElKid
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:14:55
https://cdn.discordapp.c…7150/unknown.png
unknown.png
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:15:26
ohhh i thought because i want to eliminate the negative sign for the t^2 on the step above it
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pandora ୨୧
5555
pandora ୨୧
false
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:16:21
because -t^2 and -2y both have negative in front, so to remove its positive thats why the negative is gone?
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BillyElKid
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:16:53
that negative sign was already eliminated
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:16:55
https://cdn.discordapp.c…0283/unknown.png
unknown.png
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pandora ୨୧
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f0b0029cde9b49dea1985582cb6b7abb
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pandora ୨୧
11/07/2021 16:17:35
ohhh
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Deleted User
0000
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false
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f0b0029cde9b49dea1985582cb6b7abb
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pandora ୨୧
11/07/2021 16:18:36
i think i made a mistake there, one thing to clarify, the -g is seperated from the t^2, yes?
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BillyElKid
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f0b0029cde9b49dea1985582cb6b7abb
738,072,502,881,878,100
BillyElKid
11/07/2021 16:18:47
yeeeep
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f0b0029cde9b49dea1985582cb6b7abb
611,787,651,661,561,900
pandora ୨୧
11/07/2021 16:20:03
okay I'm fixing it again
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